How can i grow my hair longer fast!?

So im Going to a new school nxt yr,and right now its june 2 and school starts next month on the 17,i think,my hair is to my sholders and its kinda frizzy/curly is there and like shampoos/conditioner that might help speed up the prosess? i here beautiful lengeths by pantine is great and the other one by pantine,im not sure wat its calld,i think its breakage to streangth but im not sure,also i straighten my hair throughout the school yr but not in the summer and iunder stand tht it WILL take time but is it possable to grow it that much within this time spand? its ok if it takes just a little longer but i just really really realllyyy want longer hair,at leist to the middle of my cheast,im almost willing to do anything! please please please pleeeeeeeeaaaaaaeeeeee help! please!!! thanks